#container{
    background-color: white;
    width: 600px;
    margin:auto;
    padding:20px;
    text-align: center;
    box-shadow: 10px 10px 15px black;
}

body{
    background-color: silver;
}

#time-box{
    margin:10px 0;
    font-size: 18px;
}

button{
    width:200px;
    height: 50px;
    margin:10px 0;
    border:0;
    outline: none;
    font-size: 25px;
    font-weight: bold;
    color: white;
    background-color: lightcoral;
}

button:hover{
    background-color: coral;
}